Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 9 10.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2018   06:32:03   ( -70.36,-102.26) 09/10/2018   06:33:14  ( -70.26,-101.70)   23.44                71
 09/10/2018   07:22:42   (  69.98,  65.63) 09/10/2018   07:22:44  (  70.00,  65.57)    2.95                 2
 09/10/2018   08:13:24   ( -69.89,-126.91) 09/10/2018   08:12:14  ( -69.89,-126.96)    1.74                70
 09/12/2018   22:48:54   ( -70.11,  13.90) 09/12/2018   22:49:47  ( -70.09,  13.93)    2.50                53
 09/12/2018   23:39:38   (  70.00,-178.63) 09/12/2018   23:39:14  (  69.99,-178.57)    2.81                24
 09/13/2018   00:30:05   ( -69.11, -10.02) 09/13/2018   00:28:57  ( -69.16, -12.05)   80.86                68
 09/15/2018   15:05:49   ( -70.07, 129.72) 09/15/2018   15:06:17  ( -70.08, 129.79)    2.88                28
 09/15/2018   15:56:32   (  69.91, -62.73) 09/15/2018   15:55:45  (  69.91, -62.79)    2.21                47
 09/18/2018   06:32:05   (  70.30,  77.82) 09/18/2018   06:33:16  (  70.22,  78.25)   18.38                71
 09/18/2018   07:22:43   ( -69.98,-114.38) 09/18/2018   07:22:48  ( -70.00,-114.43)    2.90                 5
 09/18/2018   08:13:27   (  69.88,  53.09) 09/18/2018   08:12:15  (  69.89,  53.06)    1.53                72
 09/20/2018   22:48:55   (  70.06,-166.04) 09/20/2018   22:49:47  (  70.08,-166.07)    2.97                52
 09/20/2018   23:39:38   ( -70.00,   1.36) 09/20/2018   23:39:17  ( -69.98,   1.42)    3.35                21
 09/21/2018   00:30:05   (  69.00, 170.12) 09/21/2018   00:28:59  (  69.04, 167.80)   92.66                66
 09/23/2018   15:05:50   (  70.03, -50.22) 09/23/2018   15:06:17  (  70.05, -50.23)    2.74                27
 09/23/2018   15:56:32   ( -69.92, 117.26) 09/23/2018   15:55:48  ( -69.90, 117.19)    3.29                44